Well, I'd love to see a "formation" system that actually allows players to "lock" into a place.
That would be useful for various things, but foremost:
"Setting up"
A formation is set up by using "Q" and drawing a line on the ground. Right now, only the "line formation" is used, but I also can see other formations (for instance: columns) as well as different types (single rank line, double ranks line, triple ranks line, single column, double columns, ...) in the future.
Each time a formation is set up, it should remember player spots of the old formation, so players don't have to lock in again and again.
"Locking in"
Once a formation is set up, players can see it by pressing "T". Once they get near it, a circle will appear, representing their position in the line / column / whatever the formation is. Once this happens, a player is considered "locked in" a formation.
A player can only be locked in one formation at any time.
"Locking out"
A player is considered "locked out" as soon as his character gets killed or moves too far away from a formation. Also if a formation does no longer contain enough players to maintain a formation, it'll disband automatically.
"Formation Movement"
Once locked in, a player can always keep track of his position in the formation. As long as they stay near that spot, their own movement speed (if the correct one is selected) will be matched formation movement speed. This may help to keep a formation together.
Weeeeeeeeeelll ... that's a bit more than "easy textures on the ground", but I definitely love to see that. A proper formation management system
However, I think such system is something ppl might like. Especially some of the company players seem to set up formations rather often and want to maintain 'em as long as possible. Since most well organized matches usually start with a gathering of rank'n'file, including setting up a column formation (single or double ranks), I definitely love to see a more complex formation management system. The one I'm describing above is just one of many possible solutions.